A note on supersaturated set systems

A well-known theorem of Erd?s, Ko and Rado implies that any family? ? of k -element subsets of an n -element set with more than? n - t k - t members must contain two members? F and? F ' with | F ? F ' | < t , as long as? n is sufficiently large with respect to? k and? t . We investigate how many such pairs? ( F , F ' ) ? ? × ? there must be in any such family? ? with? | ? | = α n - t k - t and? α 1 .